An
abrasive cutter formed of at least one
diamond particle, preferably at least one mono-
diamond crystal and metallic binder material distinguished by the fact that the
diamond particle (D) has a size of about 50 mum to about 500 mum and each diamond particle (D) is enclosed by a
coating (H) produced in a
fluidized bed with the
coating having a wall thickness of about 10 mum to about 200 mum. The volume of the
coating (H) constitutes at least 30% of the volume of the diamond particles (D) in the fully consolidated state following individual
sintering of the coated diamond particles (D, H). The
abrasive cutters can be applied directly onto an
abrasive tool. Further they can be processed to form composite cutters or
cutting segments. In the method of forming the abrasive cutter, the diamond particle (D) is brought into a
fluidized bed reactor and enclosed in a
metallic coating (H). Coated diamond particle (D, H) can be processed into larger cutters or segments in each case individually sintered and fixed directly on an abrasive tool.